CN109984825B

CN109984825B - Be used for CT puncture to intervene and use guiding mechanism

Info

Publication number: CN109984825B
Application number: CN201910260861.6A
Authority: CN
Inventors: 韦宏敏
Original assignee: Wuhu No 2 Peoples Hospital
Current assignee: Wuhu No 2 Peoples Hospital
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-05-22
Anticipated expiration: 2039-04-02
Also published as: CN109984825A

Abstract

The invention belongs to the field of medical instruments, in particular to a guide mechanism for CT puncture intervention, which aims at the problems of troublesome puncture positioning and inconvenient puncture guide and provides a scheme that the guide mechanism comprises a fixed plate, wherein the fixed plate is provided with a window arranged along the length direction of the fixed plate, an adjusting mechanism is arranged above the opening of the window, the adjusting mechanism comprises a deflection plate with an arc-shaped structure, two ends of the deflection plate are fixedly connected with rotating shafts, and one side, far away from each other, of the two groups of rotating shafts is movably sleeved with a telescopic plate rotating along the circumferential direction of the deflection plate. The invention can adjust the fixed position of the needle head at the bottom of the puncture needle, and simultaneously, the needle head is always positioned above the top of the marked position when the puncture direction is adjusted, thereby improving the puncture precision, avoiding secondary positioning operation, adjusting the puncture direction and the puncture depth when puncturing, simultaneously fixing the puncture direction and the puncture depth, reducing the damage of the puncture to a patient caused by shaking in the operation, and improving the puncture precision and the safety.

Description

Be used for CT puncture to intervene and use guiding mechanism

Technical Field

The invention relates to the technical field of medical instruments, in particular to a guide mechanism for CT puncture intervention.

Background

The CT interventional technology is a technology which utilizes CT as a guide device for fine needle aspiration biopsy or treatment, when the CT interventional operation is carried out, a patient firstly utilizes CT equipment to carry out scanning initial examination, the patient position is detected by scanning, then the analysis is carried out according to the patient condition, the puncture position, the puncture depth and the puncture angle of the operation are obtained, when the operation is carried out according to the formulated operation scheme, because no guide mechanism or the function of the guide mechanism is simple during the operation, the puncture depth, the puncture position and the puncture angle are not proper during the puncture, the precision of the operation is low, the operation is troublesome, and the operation effect is low;

the application number is CN201520633304.1, the CT puncture accurate positioning device comprises a locking unit A, a slide way, an arc-shaped support rod, a locking unit B, a manual rod, a base, a suspender, a manual knob, a screw rod A, a support, a guide needle, a needle seat, a screw rod B and a clamping block, wherein the slide way is arranged on the upper part of the arc-shaped support rod, the clamping block is arranged in the slide way, the locking unit A and the suspender are respectively arranged at the upper end and the lower end of the clamping block, the screw rod B is arranged at the lower end of the suspender, the support is arranged at the lower end of the suspender, the screw rod A is arranged on the support, the needle seat and the manual knob are respectively arranged at the left end and the right end of the screw rod A, the lower end of the arc-shaped support rod is arranged on the base, the locking unit B and the manual rod are respectively arranged at the lower part of, therefore, a guide mechanism for CT puncture intervention is required.

Disclosure of Invention

The invention provides a guide mechanism for CT puncture intervention, which solves the problems of troublesome puncture positioning and inconvenient puncture guide.

In order to achieve the purpose, the invention adopts the following technical scheme:

a guide mechanism for CT puncture intervention comprises a fixed plate, wherein the fixed plate is provided with a window arranged along the length direction of the fixed plate, an adjusting mechanism is arranged above the opening of the window and comprises a deflection plate with a circular arc structure, two ends of the deflection plate are fixedly connected with rotating shafts, one side, far away from each other, of each two groups of rotating shafts is movably sleeved with a telescopic plate rotating along the circumferential direction of the corresponding rotating shaft, a tension rod arranged along the axial direction of the corresponding telescopic plate is movably sleeved at the middle position of the corresponding telescopic plate, a switching mechanism is arranged at one end, close to the deflection plate, of the tension rod, a channel arranged along the diameter direction of the corresponding tension rod is arranged at one end, far away from the deflection plate, of the tension rod, a locking mechanism for locking is arranged inside the channel, a guide channel arranged along the length direction of the deflection plate is arranged on the, two groups of push plates which are arranged in parallel are movably sleeved in the cavity, the push plates are positioned on two sides of the guide channel, and the deflection plate is provided with a propelling mechanism for advancing the puncture needle.

Preferably, the shifter includes the connecting rod that cup joints with the straining rod activity, the one end fixedly connected with that the connecting rod stretches into the cavity is located and sets up first push rod between two sets of push pedals, and the push pedal is close to the one end of first push rod one side and offers the promotion groove that the slope set up, and the first spacing groove that sets up along push pedal length direction is offered to the side in promotion groove, and first spacing groove cup joints with first push rod activity, and one side that two sets of push pedals were kept away from each other is provided with the first spring of contradicting with the cavity inside wall, and the connecting rod cup joints with the pivot activity.

Preferably, the locking mechanism comprises two groups of pressing blocks which are symmetrically arranged along the tensioning rod, a pushing channel which is obliquely arranged is formed in the two groups of pressing blocks, a second push rod of an L-shaped structure is sleeved on the pushing channel in the inner movable mode, one end of the second push rod extending out of the pushing channel is fixedly connected with the tensioning rod, one side of the two groups of pressing blocks, which are far away from each other, is fixedly connected with an array-arranged clamping block, and the clamping block is in a pyramid-shaped structure and is in sliding sleeve connection with the channel.

Preferably, the holding tank that cup joints with the pivot activity is seted up to the one end that the expansion plate is close to the deflector, and the one end that the pivot stretched into the holding tank is provided with the retaining ring that fixedly cup joints with the straining bar outer lane, and the one end welding that the retaining ring is close to the pivot has the guide bar that cup joints with the pivot activity, and the one end welding that the pivot was kept away from to the retaining ring has the activity latch that sets up along its axis array, and the first draw-in groove along pivot axis array distribution is seted up to the inside wall of holding tank, and first draw-in.

Preferably, advancing mechanism includes the removal frame that cup joints with the deflector activity, the fixed cover in top of removing the frame has connect the guiding tube, the guiding tube stretches out the outer lane activity that removes the frame top and has cup jointed the rotation lantern ring, the bottom both sides fixedly connected with poking rod of rotating the lantern ring, the guiding tube stretches out the outer lane activity that removes the frame bottom and has cup jointed the card lantern ring of dying, card death lantern ring and poking rod fixed connection, the poking rod is located the inner circle fixedly connected with poking block of cavity, the activity of guiding tube has cup jointed and has stretched into the sleeve pipe, the welding of the both sides outer lane of stretching into the sleeve pipe has the guide block that sets up along its length direction, the top.

Preferably, the welding of the top inner circle of the restriction lantern ring has the latch that blocks that sets up along its symmetry, and the guide block is kept away from to stretch into sheathed tube one side and is seted up along the draw-in groove that blocks that its length equidistance set up, and blocks the draw-in groove and block latch joint, and the fixed cover in the top outer lane that stretches into the sheathed tube has connect the propelling movement ring, and the inner circle of guide tube sets up the groove that blocks that cup joints with the guide block activity.

Preferably, the bottom welding of deflector has the rack of the arc structure that sets up along its length direction, and the tooth on the rack is convex structure, and the guiding groove of annular structure is all seted up to the inner circle and the outer lane at the dead lantern ring top of card, and the dead lantern ring of card is connected with the tooth joint on the rack, and the cross section of the dead lantern ring of card is U type structure, is provided with the second spring between the dead lantern ring of card and the deflector.

Preferably, the inside walls of the two sides of the window are provided with sliding grooves arranged along the length direction of the window, the inside walls of the top and the bottom of the sliding grooves are provided with inner grooves arranged in an array mode, and the inner grooves are connected with the clamping blocks in a clamping mode.

In the present invention,

the fixed position of the needle head at the bottom of the puncture needle can be adjusted by arranging a fixed plate, a window, an adjusting mechanism, a deflection plate, a rotating shaft, a telescopic plate, a tensioning rod, a switching mechanism, a channel, a locking mechanism, a guide channel, a cavity, a propelling mechanism, a switching groove, a containing groove, a connecting rod, a first push rod, a push plate, a retainer ring, a second pushing and pressing block, so that the needle head is close to and marked at the marked position on the body surface of a patient, and meanwhile, the needle head is always positioned above the top of the marked position when the puncture direction is adjusted, thereby improving the puncture precision and avoiding secondary;

the puncture direction and the puncture depth can be adjusted during puncture through the arranged moving frame, the rotating lantern ring, the poke rod, the guide tube, the clamping lantern ring, the extending sleeve, the pushing lantern ring, the guide block and the limiting lantern ring;

in conclusion, the fixed position of the needle head at the bottom of the puncture needle can be adjusted, the needle head is enabled to be close to the marked position marked on the body surface of the patient, the needle head is enabled to be always positioned above the top of the marked position when the puncture direction is adjusted, the puncture precision is improved, secondary positioning operation is avoided, the puncture direction and the puncture depth can be adjusted when the puncture is carried out, the puncture direction and the puncture depth are fixed, the damage of the puncture to the patient caused by shaking in the operation is reduced, and the puncture precision and the puncture safety are improved.

Drawings

FIG. 1 is a schematic structural view of a guiding mechanism for CT puncture intervention according to the present invention;

FIG. 2 is a schematic structural diagram of an adjusting mechanism of a guiding mechanism for CT puncture intervention according to the present invention;

FIG. 3 is a side view of an adjusting mechanism for a CT puncture guiding mechanism according to the present invention;

FIG. 4 is a partially enlarged structural schematic view of a guiding mechanism for CT puncture intervention according to the present invention;

FIG. 5 is a schematic structural diagram of a pushing mechanism of a guiding mechanism for CT puncture intervention according to the present invention;

FIG. 6 is a schematic structural view of a guiding mechanism extending into a cannula for CT puncture intervention according to the present invention;

fig. 7 is a schematic structural view of a moving frame of a guide mechanism for CT puncture intervention according to the present invention.

In the figure: the device comprises a fixing plate 1, a window 2, an adjusting mechanism 3, a deflection plate 4, a rotating shaft 5, a telescopic plate 6, a tensioning rod 7, a conversion mechanism 8, a channel 9, a locking mechanism 10, a guide channel 11, a cavity 12, a propelling mechanism 13, a transfer groove 14, a receiving groove 15, a connecting rod 16, a first push rod 17, a push plate 18, a retainer ring 19, a second push rod 20, a pressing block 21, a moving frame 22, a rotating lantern ring 23, a poke rod 24, a guide pipe 25, a clamping lantern ring 26, a clamping lantern ring 27 extending into a sleeve 28, a pushing lantern ring 29, a guide block 29 and a limiting lantern ring 30.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-7, a guiding mechanism for CT puncture intervention comprises a fixing plate 1, the fixing plate 1 is provided with a window 2 arranged along the length direction of the fixing plate, an adjusting mechanism 3 is arranged above the opening of the window 2, the adjusting mechanism 3 comprises a deflecting plate 4 with a circular arc structure, two ends of the deflecting plate 4 are fixedly connected with rotating shafts 5, one side of each two groups of rotating shafts 5 far away from each other is movably sleeved with a telescopic plate 6 rotating along the circumferential direction of the two groups of rotating shafts, the middle position of the telescopic plate 6 is movably sleeved with a tension rod 7 arranged along the axial direction of the telescopic plate, one end of the tension rod 7 close to the deflecting plate 4 is provided with a switching mechanism 8, one end of the tension rod 7 far away from the deflecting plate 4 is provided with a channel 9 arranged along the diameter direction of the tension rod, a locking mechanism 10 for locking is arranged inside the channel 9, the deflecting plate 4 is provided with a guiding channel 11, two groups of push plates 18 which are arranged in parallel are movably sleeved in the cavity 12, the push plates 18 are positioned on two sides of the guide channel 11, and the deflection plate 4 is provided with a propelling mechanism 13 for advancing the puncture needle.

Further, shifter 8 includes the connecting rod 16 that cup joints with the straining rod 7 activity, the one end fixedly connected with that connecting rod 16 stretches into cavity 12 is located and sets up first push rod 17 between two sets of push pedals 18, the push pedal 18 is close to the one end of first push rod 17 one side and offers the promotion groove that the slope set up, the first spacing groove that sets up along push pedal 18 length direction is offered to the side in promotion groove, and first spacing groove cup joints with first push rod 17 activity, one side that two sets of push pedals 18 kept away from each other is provided with the first spring of contradicting with cavity 12 inside wall, connecting rod 16 cup joints with 5 activities of pivot.

Especially, locking mechanism 10 includes two sets of briquetting 21 that set up along tightening rod 7 symmetry, sets up the promotion passageway that the slope set up on two sets of briquetting 21, and the inside activity of promotion passageway has cup jointed the second push rod 20 of L type structure, and second push rod 20 stretches out the one end and the tightening rod 7 fixed connection that promote the passageway, and the fixture block that one side fixedly connected with array set up that two sets of briquetting 21 kept away from each other, and the fixture block is that pyramid structure briquetting 21 cup joints with the passageway 9 is slided.

Worth explaining, holding tank 15 that cup joints with 5 activities of pivot is seted up to the one end that expansion plate 6 is close to deflector 4, the one end that pivot 5 stretched into holding tank 15 is provided with the retaining ring 19 that fixedly cup joints with straining bar 7 outer lane, the one end welding that retaining ring 19 is close to pivot 5 has the guide bar that cup joints with 5 activities of pivot, the one end welding that retaining ring 19 kept away from pivot 5 has the activity latch that sets up along its axis array, the first draw-in groove along 5 axis array distributions of pivot is seted up to the inside wall of holding tank 15, and first draw-in groove and activity latch joint.

In addition, advancing mechanism 13 includes the removal frame 22 that cup joints with 4 activities of deflector, the fixed guiding tube 25 that has cup jointed in top of removing frame 22, the outer lane activity that guiding tube 25 stretched out removal frame 22 top has cup jointed and has rotated the lantern ring 23, the bottom both sides fixedly connected with poker rod 24 of rotating lantern ring 23, guiding tube 25 stretches out the outer lane activity that removes the frame 22 bottom has cup jointed the dead lantern ring 26 of card, the dead lantern ring 26 of card and poker rod 24 fixed connection, poker rod 24 is located the inner circle fixedly connected with poker block of cavity 12, guiding tube 25's activity has cup jointed and has stretched into sleeve pipe 27, the welding of the both sides outer lane of stretching into sleeve pipe 27 has the guide block 29 that sets up along its length direction, the activity of the top outer lane of guiding tube 25 has cup jointed.

Besides, the welding of the top inner circle of the restriction lantern ring 30 has the blocking latch that sets up along its symmetry, and the guide block 29 is kept away from one side that stretches into the sleeve 27 and is offered the draw-in groove that blocks that sets up along its length equidistance, and blocks the draw-in groove and block latch joint, and the fixed cover in top outer lane that stretches into the sleeve 27 has connect the propelling movement ring 28, and the inner circle of guide tube 25 offers the groove that blocks that cup joints with the guide block 29 activity.

Furthermore, the bottom of the deflection plate 4 is welded with a rack of an arc structure arranged along the length direction of the deflection plate, teeth on the rack are of a circular arc structure, the inner ring and the outer ring at the top of the clamping sleeve ring 26 are both provided with guide grooves of an annular structure, the clamping sleeve ring 26 is clamped with the teeth on the rack, the cross section of the clamping sleeve ring 26 is of a U-shaped structure, and a second spring is arranged between the clamping sleeve ring 26 and the deflection plate 4.

Particularly, the inner side walls of the two sides of the window 2 are provided with sliding grooves arranged along the length direction of the window, the inner side walls of the top and the bottom of each sliding groove are provided with inner grooves arranged in an array manner, and the inner grooves are clamped with the clamping blocks;

the first embodiment is as follows:

the two sides of the guide tube 25 are provided with a transfer groove 14 with a circular arc structure on the movable frame 22, the poke rod 24 is positioned in the transfer groove 14, the bottom of the fixed plate 1 is fixedly connected with a buffer layer with an annular structure, and the two sides of the fixed plate 1 are provided with binding bands.

The working principle is as follows:

when the device is used, the fixing plate 1 is placed on the outer side of the skin of a part of a patient needing CT puncture, binding and fixing are carried out by using a binding band, when the position of the whole deflection plate 4 is adjusted, the rotating sleeve ring 23 is rotated, then the rotating sleeve ring 23 is rotated to drive the poke rod 24 to rotate along the switching groove 14, so that the poke block on the poke rod 24 rotates along with the rotating sleeve ring, the poke block moves two groups of push plates 18 positioned in the cavity 12 to positions far away from each other, then under the guidance of the first limiting groove, in order to ensure that the first push rod 17 can completely move along with the first push rod 17, the cross section of the first limiting groove is arranged in a T-shaped structure, one end, extending into the first guide groove, of the first push rod 17 is arranged in the T-shaped structure, so that the first push rod 17 moves to the position of the deflection plate 4, then the driving connecting rod 16 of the first push rod 1 moves to the direction, firstly, the connecting rod 16 drives the second push rod 20 to move towards the direction of the deflector 4, under the guidance of the pushing channel, two groups of pressing blocks 21 move towards the direction of mutual approaching, at this time, the clamping blocks on the pressing blocks 21 are separated from contact with the inner grooves in the sliding grooves in the window 2, the expansion plate 6 is pushed to enable the expansion plate 6 to slide along the length direction and the width direction of the window 2, and therefore the position of the bottom needle head of the puncture needle, which is placed on the propelling mechanism 13 and extends into the sleeve 27, is adjusted, and the bottom needle head of the puncture needle is enabled to be close to the puncture point marked on the epidermis of a patient; when the puncture angle is adjusted, the retainer ring 19 moves towards the direction of the deflection plate 4, so that movable clamping teeth on the retainer ring 19 are separated from contact with the first clamping grooves on the side walls of the accommodating groove 15, then the deflection plate 4 is pushed, the deflection plate 4 is driven by the rotating shaft 5 to rotate, the inclination angle of the deflection plate 4 is adjusted, further, the position of the pushing mechanism 13 on the deflection plate 4 is adjusted to realize three-dimensional adjustment of the puncture direction of the puncture needle, the rotating sleeve ring 23 is pushed downwards, at this time, the poke rod 24 drives the clamping sleeve ring 26 to move downwards to be separated from contact with teeth on a rack arranged at the bottom of the deflection plate 4, and then the moving frame 22 is pushed to move along the length direction of the deflection plate 4, so that the inclination angle of the pushing mechanism 13 is adjusted, and the positioning and the adjustment of the inclination direction of the puncture needle are;

when the puncture depth is adjusted, the limiting lantern ring 30 at the top of the guide pipe 25 is rotated, then the blocking latch on the limiting lantern ring 30 is separated from the blocking clamping groove positioned on the outer side of the extending sleeve 27 to push the puncture needle, the puncture needle drives the extending sleeve 27 to move downwards along the guide pipe 25 until the limiting lantern ring is moved to a required position, the blocking latch is abutted against the blocking clamping groove when the limiting lantern ring 30 is rotated, so that the extending sleeve 27 is fixed, the fixed position of the needle head at the bottom of the puncture needle can be adjusted to enable the needle head to be close to and marked on the body surface of a patient, meanwhile, the needle head is always positioned above the top of the marked position when the puncture direction is adjusted, the puncture precision is improved, the secondary positioning operation is avoided, the puncture direction and the puncture depth can be adjusted when the puncture is punctured, the puncture direction and the puncture depth are fixed, and the damage of the, improve the puncture precision and the safety.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A guide mechanism for CT puncture intervention comprises a fixed plate (1) and is characterized in that a window (2) arranged along the length direction of the fixed plate (1) is formed in the fixed plate (1), an adjusting mechanism (3) is arranged above an opening of the window (2), the adjusting mechanism (3) comprises a deflection plate (4) of a circular arc structure, rotating shafts (5) are fixedly connected to two ends of the deflection plate (4), an expansion plate (6) rotating along the circumferential direction of the two groups of rotating shafts (5) is movably sleeved on one side far away from each other, a tensioning rod (7) arranged along the axial direction of the expansion plate (6) is movably sleeved at the middle position of the expansion plate (6), a switching mechanism (8) is arranged at one end, close to the deflection plate (4), of the tensioning rod (7), a passage (9) arranged along the diameter direction of the deflection plate (4) is formed at one end, far away from the, a locking mechanism (10) for locking is arranged in the channel (9), a guide channel (11) arranged along the length direction of the deflection plate (4) is formed in the deflection plate, a cavity (12) with an annular structure is formed in the inner ring of the guide channel (11), two groups of push plates (18) arranged in parallel are movably sleeved in the cavity (12), the push plates (18) are positioned on two sides of the guide channel (11), and a propelling mechanism (13) for advancing the puncture needle is arranged on the deflection plate (4);

the conversion mechanism (8) comprises a connecting rod (16) movably sleeved with the tension rod (7), one end of the connecting rod (16) extending into the cavity (12) is fixedly connected with a first push rod (17) arranged between the two groups of push plates (18), one end, close to the first push rod (17), of each push plate (18) is provided with a pushing groove which is obliquely arranged, the side edge of each pushing groove is provided with a first limiting groove arranged along the length direction of the corresponding push plate (18), the first limiting groove is movably sleeved with the first push rod (17), one side, away from each other, of each of the two groups of push plates (18) is provided with a first spring which is abutted against the inner side wall of the cavity (12), and the connecting rod (16) is movably sleeved with the rotating shaft (5);

locking mechanism (10) include two sets of briquetting (21) that set up along tightening rod (7) symmetry, set up the promotion passageway that the slope set up on two sets of briquetting (21), the inside activity that promotes the passageway has cup jointed second push rod (20) of L type structure, and second push rod (20) stretch out the one end and the tightening rod (7) fixed connection that promote the passageway, the fixture block that one side fixedly connected with array set up that two sets of briquetting (21) kept away from each other, and the fixture block cup joints for pyramid structure briquetting (21) and passageway (9) slip.

2. The guiding mechanism for CT puncture intervention according to claim 1, wherein an accommodating groove (15) movably sleeved with the rotating shaft (5) is formed in one end of the expansion plate (6) close to the deflection plate (4), a check ring (19) fixedly sleeved with the outer ring of the tension rod (7) is arranged at one end of the rotating shaft (5) extending into the accommodating groove (15), a guiding rod movably sleeved with the rotating shaft (5) is welded at one end of the check ring (19) close to the rotating shaft (5), movable clamping teeth arranged along the axis array are welded at one end of the check ring (19) far away from the rotating shaft (5), first clamping grooves distributed along the axis array of the rotating shaft (5) are formed in the inner side wall of the accommodating groove (15), and the first clamping grooves are clamped with the movable clamping teeth.

3. The guiding mechanism for CT puncture intervention according to claim 1, wherein the propelling mechanism (13) comprises a movable frame (22) movably sleeved with the deflection plate (4), a guiding tube (25) is fixedly sleeved on the top of the movable frame (22), a rotating sleeve ring (23) is movably sleeved on the outer ring of the guiding tube (25) extending out of the top of the movable frame (22), poking rods (24) are fixedly connected to both sides of the bottom of the rotating sleeve ring (23), a clamping sleeve ring (26) is movably sleeved on the outer ring of the guiding tube (25) extending out of the bottom of the movable frame (22), the clamping sleeve ring (26) is fixedly connected with the poking rods (24), the poking rods (24) are fixedly connected with poking blocks located on the inner ring of the cavity (12), an extending sleeve (27) is movably sleeved with the guiding tube (25), and guiding blocks (29) arranged along the length direction of the guiding tube (27) are welded on the outer rings on both sides of the extending, the top outer ring of the guide pipe (25) is movably sleeved with a limiting lantern ring (30).

4. The guiding mechanism for CT puncture intervention as claimed in claim 3, wherein the inner ring of the top of the limiting sleeve ring (30) is welded with blocking latches symmetrically arranged along the limiting sleeve ring, one side of the guiding block (29) far away from the insertion sleeve (27) is provided with blocking slots equidistantly arranged along the length of the guiding block, the blocking slots are clamped with the blocking latches, the outer ring of the top of the insertion sleeve (27) is fixedly sleeved with the pushing ring (28), and the inner ring of the guiding tube (25) is provided with blocking slots movably sleeved with the guiding block (29).

5. The guide mechanism for CT puncture intervention according to claim 1, wherein a rack of an arc structure is welded at the bottom of the deflection plate (4) along the length direction of the deflection plate, teeth on the rack are of an arc structure, guide grooves of an annular structure are formed in an inner ring and an outer ring at the top of the clamping sleeve ring (26), the clamping sleeve ring (26) is clamped with the teeth on the rack, the cross section of the clamping sleeve ring (26) is of a U-shaped structure, and a second spring is arranged between the clamping sleeve ring (26) and the deflection plate (4).

6. The guiding mechanism for CT puncture intervention according to claim 1, wherein the inner side walls of the two sides of the window (2) are provided with sliding grooves arranged along the length direction thereof, the inner side walls of the top and the bottom of the sliding grooves are provided with inner grooves arranged in an array manner, and the inner grooves are clamped with the clamping blocks.